The 2010 Symposium On Component-based Software Engineering (cbse 2010) Was The 13th In A Series Of Successful Events That Have Grown Into The Main Forum For Industrial And Academic Experts To Discuss Component Technology. Cbse Is Concerned With The Development Of Software-intensive Systems From - Dependently Developed Software-building Blocks (components), The Development Of Components, And System Maintenance And Improvement By Means Of Com- Nent Replacement And Customization. The Aim Of The Conference Is To Promote A Science And Technology Foundation For Achieving Predictable Quality In Software Systems Through The Use Of Software Component Technology And Its Associated Software Engineering Practices. In Line With A Broad Interest, Cbse 2010 Received 48 Submissions. From These Submissions, 14 Were Accepted After A Careful Peer-review Process Followed By An Online Program Committee Discussion. This Resulted In An Acceptance Rate Of 29%. The Selected Technical Papers Are Published In This Volume. For The Fourth Time, Cbse 2010 Was Held As Part Of The Conference Series: Fed- Ated Events On Component-based Software Engineering And Software Archit- Ture (comparch). The Federated Events Were: The 13th International S- Posium On Component-based Software Engineering (cbse 2010), The 6th - Ternational Conference On The Quality Of Software Architectures (qosa 2010), Andthe1stinternationalsymposium Onarchitecting Criticalsystems(isarcs 2010). Together With Comparchβs Industrial Experience Report Track And The Co-located Workshop On Component-oriented Programming (wcop 2010), Comparch Provided A Broad Spectrum Of Events Related To Components And Architectures.